Electrically-operated hammer.



PATENTED JAN. 22, 1907.

R. P. IRVING. ELEOTRIOALLY OPERATED HAMMER.

APPLICATION FILED MAY 21,1906.

2 SHEETS-SHEET 1.

No. 841,975.. PATENTED JAN. 22, 1907.

R. P. IRVING.

ELECTRIOALLY OPERATED HAMMER. APPLICATION FILED MAY 21. 1906.

2 SHEETSSHEET 2.

magnets, the same being UNITED STATES PATENT OFFICE.

ELECTFHCALLY QPEFEATED HAMMER;

Specification of Letters 'Patent.

Patented Jan. 22,1907.

Application filed May 21, 1906. Serial No. 317.897.

To aZZ whom it may concern:

Be it known that 1, Roman P. IRVING, a citizen of the United States, Quincy, in the county of Norfolk and State of Massachusetts, have invented new and useful Improvements in Electrically-Operated Hammers, of whi h the foilowing is a specification.

The object of this invention t pro ide a hammer operated by one or more electroiarticularly adapt-- ed for use as a toy.

The invention consists in the combination and arrangement of parts forth in the following specification and particularly pointed out in the claim thereof.

p E 1, a P: neieiiing LO the oiamngs, e gtue 1 1s a out elevation, partly bro ten away, improved electricaliy-operat h ploying one electromagnet i i i tion, partly in plan, taken on hr Z 2 of Fig.

i 1g. 3 is front elevation, partly broken away and shown in section, of a niodiiiml' form of my invention employing two electromagnets.

Like numerals refer to like parts througle out the several views of the drawings.'

"111v the drawings, Figs. 1 and 2 a frame consisting ofa base 6 of insulating n'iaterial, preferably wood, and side standards 7" 3, fastened to said base. The standards 7 and S are formed of nonunagnetiv sheet metal and have fastened thereto guide-blocks 9 and 10, respectively. These guide-blocks are also formed of non-magnetic sheetmetal and have mounted thereon between their adjacent ends a slide-block 11, adapted to slide on the guide blocks or Ways 9 and 10. The slide-block 11 is fastened to a core 12, which is slidable within an eloctromagnot 13 and has integral therewith or fastened thereto, as may be desired, a hammer 14. The hammer 14 when in its loufwmost position, as in Fig. 1,- strikes against an anvil 15, fast to the base-6,.

A switch-lever 16, consisting of a rod 17, fast to a b ock of insulating material 18, is adapted to rock upon a pivotal pin 19, fast to the side standard 8. The free end of said rod 17 is adapted to slide in contact with a contact-plate 20, fast to an lDSHlQtil'lg-blouk 21,'which in turn is fastened to the front side of the standard 3. Two arms 22 and 23 are fastened to the insulating-block 1S and extend outwardly therefrom at an angle to each other, their free ends terminating adresiding at being connected by a wire 27 to a battery or other source of electrical power 28, the otherpole of said battery being connected by a Wire 29 to binding-post 30. The bindingpost 30 is connected by a wire 31 to a switch-- lever Said switch-lever consists of two arms 33 and 34, fast to shaft 35,.mounted in an insulating-block 36, fast to the baci.- side of the side standard 'i contact-post 3? is fast to the insulating-bicrck 36 and is connected by wile 38 E0 the electromagnet 13. The opposite terminal of the electromagnet cor iected a wire 39 to the rod 17. it is evident that the enlarged portion forming the hammer proper may be dis pensed with and the core 12 continued downwardly in contact with the anvil in the position of the parts illustrated in Fig. 1 without departing from the spirit of my invention.

The general operation of the device hereinbefore specifically described is as follows:

Assuming the parts to be in the position illus battery 28, wire 29, contact-post 30, wire 31,

shaft 35, arm 34, and contact-post 37, thus energizing the electromagnet 13 and causing the core 12, with its hammer 14, to be drawn upwardly away from the anvil 1 5 The pin 24, traveling with said core u on the sliding block 11, strikes the undersi 22 and moves the lever 16, together with the arms 22 and 23, to the position illustrated by dotted lines. The rod 17 being thus moved out of contact with the contact-plate 20, electric circuit is broken and the core 12 and hammer 14 are allowed to drop, the pin 24 striking the arm 23, the hammer finally descending until it strikes the anvil 15, and the lever 16 being moved back from the position illustrated in dotted lines to that illustrated in full lines, Fig. 1. The operation hereinbefore'described is then repeated, and thus a continuous reciprocatory motion is imparted to the core 12 and hammer 14, producing a constant series of blows of the hammer upon e of the arm magnet 13, while the downward movement is imparted to said hammer by gravity alone In the form illustrated in Fig. 3 the upward movement is also imparted to the hammer by the upper magnet; but the latter part of the downward movement of the hammer is increased in speed by the lower magnet.

- 8, fastened to said base.

Referring now to Fig. 3, 5 is a frame consisting of a base 6 of insulating material, preferably wood, and side standards 7 and The standards 7 and 8 are formed of non-magnetic sheet metal, such as brass, and have fastened thereto guide-blocks 9 and 10, respectively. These guide-blocks are also formedof nonmagnetic metz preferably brass, and have mounted thereon between their adjacent ends a slide-block 11, adapted to slide on the guide blocks or ways 9 10. .The slideblock 11 is fastened to a core 12,, which is slidable within an electromagnet 13 and has integral therewith or fastened thereto, as may be desired, a hammer 14.

It is evident that the enlarged portion forming the hammer proper may be dispensed with and the core 12 continued downwardly as far as the lower end of the hammer 14, Fig. 3, without departing from the spirit of myinvention. The hammer 14 when in itslowermost position, as in Fig. 3, strikes against a non-magnetic plate of sheet metal 15 fast to the upper side of an anvil 15 and forming in function a portion thereof, said anvil being fastened to the upper side of an electromagnet 40, saidelectromagnet being inserted in a recess provided therefor in the base 6.

A switch-lever 16, consisting of a rod 17, fast to a block of insulating material 18, is adapted to rock upon a pivotal pin 19, fast to the side standard 8. The free end of said rod 17 is adapted to slide in contact with two contact-plates 20 and 41., fast to an insulating-block 21, which in turn is fastened to the front side of the standard 8. Two arms 22 and 23 are fastened to the insulating-block 18 and extend outwardly therefrom at an angle to each other, their free ends terminating adjacent to the core 12 and slideblock 11, and when the hammer 14 is down said pin contacts with the upper side of the arm 23. The contact-plate 20 is connected by a wire 25 to a binding-most 26, said binding-post beinglconnected by a wire 27 to a battery or 0t er source of electrical power 28, the other pole of said battery being con nected by a wire 29 to a binding-post 30. The binding-post 30 is connected by a wire 31 to a switch-lever 32.

The switch-lever 32 consists of two arms 33 and 34, fast to a shaft 35, mounted in an insulating-block 36, fast to the rear side of the side standard 7. A contact-post 37 is fast to the insulating-block 36 and is connected by a wire 38 to the electromagnet 13. The opposite terminal of the electromagnet is connected by a wire 39" to the rod 1.7. Thecontact-plate 41 is connected by a wire 42 to one terminal of the electromagnet 40, the other terminal of said electromagnet be ing connected'by a wire 43' to the binding-- post 26. A wire 44 connects the rod 17 to the contact-post 37.

The general operation of the device hereinbefore specifically described is as follows: Assuming the parts to be in the position illustrated in Fig. 3, the switch-lever 32 is retated by means of the handle 33 until the arm 34 contacts with the contact-post 37. This completes the electric circuit through the wire 38, magnet 13, wire 39, rod 17, contact-plate 20, wire 25, binding-post 26, wire 27, battery 28, wire 29, contact-post 30, wire 31, shaft arm 34, and contactpost 37, thus energizing the electromagnet 13 and causing the core 12, with its hammer 14, to be drawn upwardly away from the anvil 15"and plate 15 The pin24, traveling with said core upon the sliding block 11, strikesthe under side of the arm 22 and moves the lever 16, together with the arms 22 and 23, to the position illustrated by dotted lines, the rod 17 being noved quickly across the contact-plate 41 to the position illustrated in dotted lines, the momentum of the hammer upwardly being of sufficient strength to move said lever to the position shown in dotted lines, thusbreaking the circuit with the electromagnet 13. The core 12 and hammer 14 then descend by gravity until the pin 24strikes the arm 23, when said arm is moved, together with the lever 16, until the rod '17- contacts with the plate 41. This energizes the magnet 40 by completing the electr c circuit from the plate 41 to the wire 42-, elcctromagnet 40, wire 43-, bindingpost 26, wire 27, battery 28', wire 29, binding-post 30, wire 31, shaft35, arm 34, contact-post 37, wire 44 to the rod 17 which at this time is in contact with the plate 41. The

' magnet 40 thus being energized and the hammer 14 having descended to within the field of sa1d,magnet, said hammer is drawn toward the magnet 13 with much greater speed during the latter part of its downward movement than it would attain by gravity alone.

In the t p t of its downward movement the pm 24 bemg 1n contact with the arm 23' moves the lever 16 to the position illustrated in full lines, Fig. 3, with the rod 17 in contact with the plate 20, thus moving said rod 17 away from the contactplate 41 and a aincompleting the circuit from the contactp ate 20 through the connections hereinbeore described with the magnet 1 3 whereupon the magnet 13 being energized the core 12 and hammer lymove-upwardly, as hereinbefore described, a reciprocating motion being imparted to the hammer l4 and core 12 by the alternate making'and breaking of circuit with the magnets 13 and 40, respectively.

Having thus described my invention, what I claim, and desire by Letters Patent to secure, is-

In a device of the character described, a frame consisting of a base forlned'of insulating material, two hollow standards of sheet metal fast thereto, two guide-blocks constito said lever and insulated therefrom, and

means fast to said core adapted to alternately engage said arms during the upward and downward movement thereof, respectively, whereby said lever is alternately brought out of and into contact with said plate.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

RONALD P. IRVING.

Witnesses:

Lours A. JONES, ANigIIE J. ,DAILEY. 

